const https = require('https');
const SQLHelper = require('./SQLHelper')
///雪花算法生成id
const snowflake = require('./snowflake')
module.exports = function (app) {
    ///登录拦截中间件
    function loginRouter(req, res, next) {
        if (req.method.toUpperCase() == 'OPTIONSS') {
            next()
            return;
        }
        let token = req.headers.token
        if (token) {
            SQLHelper(`select * from session where id = ${token} and state = 1`).then(ret => {
                if (ret.length) {
                    let session = ret[0]
                    if (new Date().getTime() - session.createTime < 2 * 60 * 60 * 1000) {
                        req.session = {
                            userId: session.userId,
                            userName: session.userName
                        }
                        next()
                    } else {
                        res.status(400).send({ errorMsg: '登录超时' })
                    }
                } else {
                    res.status(406).send({ errorMsg: '当前用户未登录' })
                }
            })
        } else {
            res.status(405).send({ errorMsg: '缺少token，请先进行登录' })
        }
    }
    ///让初登陆以为的所有小程序接口都先验证登陆
    app.use('/admin', loginRouter)


    ///管理后台登录
    app.post('/login', (req, res, next) => {
        let userName = req.body.userName
        let passWord = req.body.passWord
        if (userName && passWord) {
            SQLHelper(`
        select * from user where userName = '${userName}'
        `).then(users => {
                if (users.length) {////正常登录
                    let user = user[0]
                    if (passWord == user.passWord) {
                        let token = snowflake()
                        ///缓存token到session表
                        SQLHelper(`
                    INSERT INTO session(id,userId,userName,inTime,createTime,platform) 
                    VALUES(${token},'${user._id}','${user.nickName}','${formatTime(new Date())}',${new Date().getTime()},'admin')
                    `).then(ret => {
                            res.send({
                                nickName: user.nickName,
                                token,
                                avatarUrl: user.photo,
                                _id: user._id
                            })
                        })
                    } else {
                        res.send({ errorMsg: '密码错误' })
                    }

                } else {
                    res.send({ errorMsg: '当前用户不存在' })
                }
            })
        } else {
            res.send({ errorMsg: '用户名和密码不能为空' })
        }
    })

    ///退出登录
    app.get('/admin/logout', (req, res) => {
        SQLHelper(`
    update session set inTime = '${formatTime(new Date())}', state = 0 where id = '${req.headers.token}'
    where id = ${req.headers.token}
    `).then(res => {
            res.send({ msg: '退出登陆成功' })
        })
    })


    ////修改密码
    app.post('/admin/changePassWord', (req, res) => {
        let userId = req.session.userId
        let passWord = req.body.passWord
        let newPassWord = req.body.newPassWord
        if (passWord && newPassWord) {
            ///查询用户
            SQLHelper(`select password from user where _id = ${userId}`).then(users => {
                let user = users[0]
                ///比对原密码
                if (user.passWord = passWord) {
                    ///修改密码
                    SQLHelper(`update user set password = '${newPassWord}' where _id = ${userId}`).then(ret => {
                        res.send({ msg: '修改密码成功' })
                    })
                } else {
                    res.send({ errorMsg: '原密码错误' })
                }
            })
        }else{
            res.send({errorMsg:'原密码和新密码不能为空'})
        }

    })

    ////分页首页项目
    ///pageSize  每页大小 默认10
    ///pageNum 当前页 默认1
    ///type 类型 非必填
    app.get('/admin/index',(req,res) =>{
        let pageSize = req.query.pageSize || 10
        let pageNum = req.query.pageNum || 1
        let offset = (pageNum - 1) * pageSize
        let title = req.query.title
        let type = req.query.type || 'banner'
        let whereSql = 'from index_region where state = 1'
        ///按类型查询
        if(type) whereSql += ` and type = '${type}`
        ///按标题关键字搜索
        if(title) whereSql += ` and title like "${title}%" `
        SQLHelper(`
        select count(*) as total ${whereSql};
        select * ${whereSql}
        limit ${pageSize} offset ${offset}
        `).then(ret => {
            res.send({
                total:ret[0][0].total,
                rows:ret[1]
            })
        })
    })


    ///新增首页项目
    ///img 图片 必填
    ///url 连接地址 非必填
    ///title 标题 轮播图不填，其他必填
    ///status 是否启用 非必填  1，启用 0，停用
    ///type 类型 非必填 banner（默认），轮播图 category，分类 recommend，为你推荐
    app.post('/admin/index',(req,res) => {
        let img = req.body.img,url = req.boby.url,status = req.boby.status
        let type = req.boby.type || 'banner',title = req.boby.title
        if(type != 'banner' && !title){
            res.send({errorMsg:'标题不能为空'})
            return
        }
        if(status != 1) status = 0 //默认启用
        ///if(status) status = 1
        if(img){
            let createTime = new Date().getTime()
            SQLHelper(`
            INSERT INTO index_region(title,img,url,status,state,createTime,unitId,type) 
            VALUES('${title}','${img}','${url}','${status}',1,${createTime},'juzao','${type}')
            `).then(ret => {
                res.send(ret.insertId ? {_id:ret.insertId} : {errorMsg:'新增数据失败'})
            })
        }else{
            res.send({errorMsg:'传入参数错误'})
        }
    })

    
///修改首页项目
///addressId 地址_id 必填
///receiver 收货人 非必填
///phone 手机号 非必填
///city 省市区 非必填
///area 详细地址 非必填
app.put('/admin/index',(req,res) => {
    if(req.body.indexId){
        ///需要修改的项
        let updateTime = new Date().getTime()
        let updateKey = ['img','url','title','status']
        let updateValues = [`updateTime=${updateTime}`]
        for(let i = 0; i < updateKey.length; i ++){
            let key = updateKey[i],value = req.body[key]
            if(value !== undefined) updateValues.push(`${key}='${value}'`)///判断哪些项需要修改
        }
        SQLHelper(`UPDATE index_regien set ${updateValues.join(',')} WHERE _id = ${req.body.indexId}`).then(ret => {
            res.send(ret)
        })
    }else{
        res.send({errorMsg:'传入参数错误'})
    }
})



///删除地址 逻辑删除
///addressId 主码_id 必填
app.delete('/admin/index',(req,res) => {
    let indexId = req.query.indexId
    if(indexId){
        SQLHelper(`
        UPDATE index_region 
        set state = 0 
        WHERE _id = ${indexId}
        `).then(ret => {
            res.send(ret)
        })
    }else{
        res.send({errorMsg:'传入参数错误'})
    }
})
}
